Remember, the numerator of an exponenent represents the root. As well, a negative exponent means to take the reciprocal of the positive exponent (
.
So, 
is equal to ![\sqrt[3]{64^{-1}}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B64%5E%7B-1%7D%7D)
which is 1/4, because 1/4*1/4*1/4 is 1/64 (1/64 cubed root is 1/4).
For example, ![a^{b/c} = \sqrt[c]{b^{b}}](https://tex.z-dn.net/?f=a%5E%7Bb%2Fc%7D%20%3D%20%5Csqrt%5Bc%5D%7Bb%5E%7Bb%7D%7D)
The answer is c.
This is a special 60-30-90 triangle, and the angle measure of x is
Answer:
s = 4
Step-by-step explanation:
Given
3r = 10 + 5s ← substitute r = 10
3 × 10 = 10 + 5s
30 = 10 + 5s ( subtract 10 from both sides )
20 = 5s ( divide both sides by 5 )
4 = s
Answer:
71˚
Explanation:
To find the <em>mean</em> of a sum of numbers, you add all the numbers together, and then divide by how many numbers there are.
71 + 72 + 68 + 67 + 74 + 72 + 73 = 497
497 ÷ 7 = 71
Answer:
Step-by-step explanation:
18+10x+25=12
18+25+10x=12
43+10x=12
43-43+10x=12-43
10x= -31
x= -31/10
x= -3 1/10
This is the correct answer
